Telautograph.



R. T. PRAZIBR, JB

TELAUTOGRAPH.

'APPLICATION FILED AUG. 17, 1908.

Patented Aug. 13, 1912.

3 SHEETS-SHEET 1.

Ill!" vr I wzesses.

RLT. FRAZIBR, JR. TBI-AUTOGRAPH.

` l APPLIUATION FILED AUG.17, 190,8. 4 1 ,035,568, Patented Aug. 13, 1912.

' 3 SHEETS-SHEET 2.

R. T. FRAZIER, JR. TBLAUTOGRAPH.

APPLICATION IILED AUG. 17, 190B.

Patented Aug. 13, 191,2,

3 SHEETS-SHEET 3.

llllllmlllll vquently varying the .induced in the latter.

.ROBERT 1T. FRAZIER, JR., OF WASHINGTON, DISTRICT OF COLUMBIA, .ASSIGNOR` OF ONE-HALF `T0 FRANK SHUMAN. OF TACONY. PHILADELPHIA, PENNSYLVANIA..

TELAUTOGRAPH.

To all whom it may concern.'

Beit known that I, ROBERT T. FRAZIER, Jr., a citizen of the United States, residing in the city 'of Washington, District of Columbia, have invented certain new and useful Improvements in I`elautographs, of which the following is a specification.

My invention consists of a simple and accurate form of telautograph, the operation of which is based upon the principle. that a current of electricity will be induced in a.

hollow coil of wire bya4 solenoid magnetl in direct proportion to the dept-h of penetration of the latter into the bore of the former, and upon thev further' principle that any known character or combination of lines can be produced by three motions, which may, for conveniencebe termed longitudinahorresponding to the motion from top to bottoni of the character, lateral, corresponding to mot-ion from side to side of the character, and vertical, corresponding to the motion whereby the pen, pencil, stylus, or other inseribing instrument, (hereinafter, for convenience, termed the stylus) is lifted from the paper orother surface upon which the character is being formed. In adapting these principles to the purposes of a telautograph I connect theI stylus of the transmitting instrumentv to three primary magnets, susceptible, tudinal, lateral and vertical movement, each movement of the stylus varying the rela tionv of the corresponding primary magnet in respect to a secondary magnet and conscstrength of the current These secondaryI currents are transmitted to magnets at the receiving station, these magnets having armatures which are connected to the reproducing stylus in the ing stylus of the transmitting instrument, and said armatures being attracted by the magnets of the receiving instrument in direct ratio to the strength of the secondary 'current induced `in the corresponding mag Specification of Letters Patent. Application filed August 17, 190B. Serial No.

respectively, of longif saine manner that the pril mary magnets are connected to the inscrib- Patented Aug. 13, 1912. 448,925.

I have illustrated one convenient and simple combination of devices for the purpose.

Figure l representing a side view of the apparatus, partly in section; Fig. 2 a top or plan view of the same; Fig. 3 a transverse section on the line caf-a, Fig. 2, and Fig. l a diagrammatic illustration of one system of electric circuits which may be employed in carrying out my invention.

In the drawings, l represents a base board or table upon which the apparatus is mounted, this table having', at one end, a bracket 2 carrying pins 3 upon which is pivotally mounted, so as to swing transversely, a table 4t whose outer or free endy has, on the under side, a grooved track 5 running on balls or rollers which are mounted in a grooved rail the table l, both track and rail being curved to accord with the are of a circle having its axis at the pivot pins 3. Rigidly mounted on the table 4 is a horizontal, lon- .gitudinal, hollow conducting coil A and a -vertical hollow conducting coil B, a smaller coil a being adapted to play .freely in the bore of the coil A and a like coil L beingl adapted tov play freely in the bore of the coil B. Rigidly mounted on the table l, below the swinging table Ll, is another hollow conducting coil C to the bore of which is adapted a smaller conducting coil c, as shown `in Fig. 3. The coil a is connected to a longitudinally guided cross head 7, the coil Z) to a vertically guided cross head 9, and the coil cross head l0. Y

A stylus-carrying arm ll is pivoted to the cross head 7 in such manner that the said arm is free to swing in a vertical plane in order to permit the stylus 1Q at the outer end of the arm to be raised from or applied to the paper or other surface upon which a letter or other character is to be inscribed. The stylus arm 11 engages the cross head 9, as shown in Fig. 8, inorder to impart to the coil I; any vertical movements of said arm, and the latter fits between vertical guides 13 on the swinging table fl, in order that any lateral movement of the arm will be transmitted to said table and thence, through the medium ofthe cross head l0, to the coil c. Eachofthe coilsa, b and c 'will therefore receive its component partof the compound movement necessary to forni aletterorl other charaeter'by' means of the stylus 1-2, the coil conducting c to a laterally guided gms a, receiving the longitudinal component, the coil bthe vertical component, and the coilc the lateral component, and, when said coils a, and e are properly energized, the .cur-` rents induced in the secondary coils A, E

rand C will vary in direct proportion to the similar to those of the stylus oiu the transmitter, and any character produced by the stylus of the transmitting instrument'will be accurately reproduced by the stylus ofthe receiving instrument.

Any known means of transmitting the electrical currents 'from the coils of the Y transmitter to those of the receiver Vmay be 4adopted within the scope of my invention,

. and in Fig. el have illustrated, indiagram,

tra

nl. am

' shown a 'terminates in a core one system of electric circuits which may be employed, A, B and C representing the secondary coils of the transmitting instrument, 'B' and. C corresponding coils of the receiving instrument, a, l) and c the primary coils of the transmitting instrument, and a', o and, c the corresponding armatures ot the' receiving instrument, one pole of each 'of the coils A, B' and C and A, B and C y the other poles ofthe being grounded and respective pairs oi coils beingv connected by suitableline wires. lnthis-diagram l have separate battery for Aeach of the primary coils o, b and c but said coils may, if desired, be connected to a single battery or other current generator.`

The surface w "ilpon which thestylus acts is, in the present instance, an endless strip or apron of paper or other Vsuitable material passing over opposite drums 15 and sup ported upon table 16 disposed between said drums, so that, in writing, the hand which manipulates the stylus may occupyeJ substantially fixed position, the paper traveling beneath the stylus instead of the stylus being carried over the paper, whereby the lateral movements ot the stylus are relatively slight.

The shaft which carries the'driving drum- 15 is geared to a vertical shaft 17, and the leiter has a bevel wheel 19 which is normally in gear with a bevel wheel 2O on a sleeve 21 free to move longitudinally'on a driving shaft 22 to which rotative movement be imparted in any suitable manner. The bevel wheel 2O is maintained normally in mesh with the bevel wheel 19 by means of a coiled spring 23, but the sliding sleeve 21 24 adapted to the bore oil a pair of electro-magnetic coilsf and 26 disposedone in advance oi" the' other. The

r sleeve 2l, although capable oi sliding on the `2b by a wire y to the upper sleeve 'represented driving shaft 22, is compelled to turn with the same and is provided with a' second bevel wheel 27, so disposed in' respect to the bevel wheel that when Vthe sleeve 21 isf-v moved to a certain extent .against the action of the spring 23 by the action of the coil 25 on thecore 24e-the bevel wheel 20 will be moved'o'ut of mesh with'the bevel wheel 19 and rotation oi the ,shaft 17 ,fand "consequently of the paper `feeding-dru m,"will be stopped, further movement `oit the sleeve 21 feeding drums, so Vthat altera line has been written of the full length of'theband or apron the direction of movement of the latter may be reversed and a new linef started,

the shifting of the band or apron to eflect the proper spacing of the lines being eiiect ed either by hand or by suitable mechanical devices. Y

In order that the .movementsof'the band or apron m lmay be under'thecontrol of the stylus-carrying arm 11', the cross head 9 which engages said arm has a lug 30, which plays between lugs 31 on a bar 32 vertically guided alongside of the magnet B and having a lug 33 which serves .to establish elecS trical connection between the bar' 32 -and either or both cfa pair otsleeves 34 and 35 mounled'on the frame which carries the coil l5 butA insulated from one` another.

One4 terminal oi each of the coils 25 and 26 is connected to one pole, say the positive pole, of a battery 'w or other electric current generator whose other pole is connected to the bar 32, the opposite terminal of the coil being connected by a wire z/ to the lower sleeve 34- and that of the'coil The normal position of the bar 32 is that in Fig. 3, the lug 33 being free from contact with either of the sleeves 3&1 and 35. Normal lifting movement of the sleevesuch as that likely to be required in the operation of writing or drawing will not ailiect this normal position "of the bar 32, the lug -30 on the cross headv 9 traveling betweenthe lugs 31 of the bar, but a slight additional rise of the lstylus will cause such lifting movement of the vbar 32 asto bring its lug 33 intov contact with .the lower sleeve 34, thereby completing4 the. electrical circuit through the coil 25 and causing such attraction of the core 24A as will withdraw the bevel Wheel 20 Jfrom engagement with the bevel wheel 19 and thereby arrest the movement of the band or apron w. A still fue `ther lift of the stylus will bring the lug of the bar 32 into contact with both ot the sleeves 34 and 35, thereby energizing both' bevel wheel 27 into mesh with the bevat l of movement of the ,band or apron w, lowerwheel 19 and'cause reversal in the direction ing the stylus causing first a cessation oii the reverse movement and then aresumption of the forward movement. Theetylus may,` however, act uponv a laterally station ary surface to produce a line of a length dependent upon the lenvth of .travel of the coil c, being carried liack of the starting point after the completion of the line, the spacmg of the lines being effected either by movement of the receiving surface in res to the stylus or by successive-longitudinal movements of the latter within the limit of the length of travel of the coil a.

Iclaimx- 'Y l In a telautograph, transmitting and receiving stations each equipped with a stylus; a plurality' of pairs of electric coils disposed in different angular relations to said stylus, and connections whereby movement of onev coil ofjeach pair 1n respect to the other coil 'of the pair 1s controlled b the An ovement of the stylus, in combination with a 'pluralit, of electric circuits each connecting one of t e cols of. a air at thetransmitting station to a c'oil lthe corresponding pair at the receiving station. p l y 2. In a telautograph,4 the combination of a stylus a plurality of pairs of electric coilsl disposed in different angular relations to said stylus and one pair at a right angle to the other pair, and a stylus `bar connected. at one end to the stylus and atthe opposite end to a coil of one pair, said stylus bar at a lpoint between its ends, passing through and y ei'ng longitudinally movable 1n a, cross head. which is connected to a coil of the other pair. y

A-31 In a' 'pairs of coils, a third telautograph,V the combination of a stylus, two pairs o electric coils dispbsed in different angular relations to stylus and one air at a rlght an le tothe otherpair a latera y swinging ta le'y carrying 'saidv disposed at a right ang e to each of the iirst two palrs 4and havin" Vits movable coil connected to said'. lateral y swingingl table, and a stylus carryln bar connected at one cnd to the movable oil of the iirst pair and engaging a cross head which is connected to the movable coil of the second pair.

4|. In a telautograph7 the combinatlon of a stylus,` a plurality of pairs of electric coils disposed in different angular relations to said stylus; and connections whereby movement of one .coil of each pair in respect to the other coil of the air is controlled by the movement of` the sty us.

5. ii a telautgraph, the combination of a movable transcribing surface, a movable stylus, and means-whereby a partial lift of,

said stylus is caused to eilect Stoppa e in thc `movement; ofthe transcribing su ace, andl afurther lift is caused to effect reversal ot such movement, substantially as described.

6. In a telantograph, lthe combination of a movable transcribing surface,l a movable et lus, and means whereby vertical movement o said stylus will effect stoppage or reversal 'in the direction of movement of the tran L scribing surface, said means providing 'a certain amount of lost motion of the stylus before an control ofthe d1rect1on of movement of t e transcribin surface is eifected.

In testimony wherep have signed my name to thisjspecicatlon, m the presence ofw two subscribin witnesses.

r R BERT' T. FRAZIER, Ja. lllitnesses:` y R'. T. FBAZIER,"I VmGINIA TIFFANY.,

Copies of this patent may be obtained forA ave cents each, by addressing the Commissioner of Patents,

air of electric coils 45 

